Oil & Gas
| Wed 25 Feb 2026
Beijing, Feb. 25 -- Shandong Wanbang Petroleum Tech Co Ltd has submitted a patent application for Bag Breaking Device. This invention was developed by Kang Xiaoyan, Ji Weixing, Wang Li, Qu Yaopeng, Wang Guodong, Cui Xiaodong, Zhao Yanbo, Liu Cunxin, Chen Ruixia, Zhang Cuicui and Wei Yong.
The patent application number is CN20..